std::shared_ptr<data::LogicSnapshot> cur_logic_snapshot_;
std::map< std::shared_ptr<sigrok::Channel>, std::shared_ptr<data::AnalogSnapshot> >
cur_analog_snapshots_;
std::shared_ptr<data::LogicSnapshot> cur_logic_snapshot_;
std::map< std::shared_ptr<sigrok::Channel>, std::shared_ptr<data::AnalogSnapshot> >
cur_analog_snapshots_;